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The the

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agricultural aviation began in the
early one nine hundred twenty S.

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Dusting the cotton fields of the Mississippi
Delta it originated as a means of

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fighting the ball Weevil which
infected millions of acres of cotton.

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Among the first of the aerial dusters where
the delta puffers the puffers were an

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early airplane built by half the land

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and designed specifically for dusting work
they take their place today among the

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aviation pioneers.

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It was planes like the puffers

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that inaugurated a new industry agricultural
aviation they hired a new industry

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however

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and getting at the foundation upon which
to build was agricultural research the

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U.S.

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Department of Agriculture evaluates new
agricultural chemicals the chemical preparations

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are used to kill insects

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and to change the growth of plants the
chemical industry supplies the U.S.D.A.

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and Also the Food

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and Drug Administration with samples
of their products for evaluation.

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With herbicides the weed killers screening

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and evaluation extends to field plots
where plant varieties are correlated with

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families of chemicals

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aerial application of agricultural chemicals
is approaching fifty million acre.

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Years annually aerial dusting

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and spraying has become a specialized
field combining agriculture

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and aviation agricultural
aviation has had its problems.

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The lack of control in spraying has
been largely overcome by experience

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the weight of pre-war insecticides
was overcome by research

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and an air of new agricultural chemicals
improved metering devices have

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been developed by the
people of Agriculture

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and aviation working in close
association work has been done

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by agricultural colleges by U.S.D.A.

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Experiment stations by general aviation

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and the chemical industry field procedures
for the measurement of distributed

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chemicals of been established.

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Work has been done on the aerial
distribution of fertilizers and seeds

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and aviation equipment has been
developed to meet the needs

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much experiment continues
with the airplane itself

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cotton that is one of our principal crops.

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The ball worm

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and the ball Weevil have been called
the bandits of the cotton patch small

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worm control should start as soon
as newly hatched worms are found

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the worst enemy of the ball
weevil is good farming practices.

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It pays to keep a weekly count on the ball
Weevil population in the cotton frequent

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application of insecticides can control
the weevil aerial dusting makes it.

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Possible to avoid tractor
damage to the crop.

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Picking time means pounds per acre the
result of correct planting fertilizing

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cultivation

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and insect control aviation

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has another job in the cotton the job
of spraying defoliation chemicals.

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The folly

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and remove the fall ager leaves from the
plant cotton defoliants are used in all

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the cotton producing states

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and are generally applied by airplanes
in the San Joaquin Valley of California.

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The following answer applied by helicopter
helicopters are liked by the cotton

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growers for their application control.

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However their high cost limits their use
this is another problem of agricultural

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aviation yet to be overcome.

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Week after the foliation
spraying the plant stand dry

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and almost leafless the
balls ripen more uniformly

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and can be gathered in a single picking
the foliation hastens maturity

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and facilitates both hand

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and machine picking the

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foliation may be necessary in order to
enable a mechanical picker to proceed

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through a field of rank and method cotton.

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So it was here with this fiber crop

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that the industry of agricultural
aviation found its beginnings

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in the Northwest agricultural.

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Aviation is valuable to the fruit industry
in particular is the apple growers

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problem. Of windfall damage

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and normal pre harvest drop the
fallen apples are bruised.

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Now the plant regulator spray retards the
growth so the abscission layer on the

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stem

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and the ripe apple remains
firm to the tree in this

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work.

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The helicopter has proven practical in an
average year the saving of three apples

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on each tree pays for helicopter

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and chemicals the application may save up
to forty percent of the crop depending

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upon conditions.

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One chemical material widely used is a
growth regulator two for five T.P..

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It is a factor for as long as a month.

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It is important to spray the trees
while their leaves are still working

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and it is important to harvest the fruit
the proper maturity plant regulator sprays

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like two four five T.P. Are used only for
the effect they have upon the plant.

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They are not used to poison insects

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or for plant disease while their use is
very specific the result for the grower is

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broad less dependence upon
nature and more control

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and managing his crop.

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The success of D.D.T.

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On the farm was a principle factor in
establishing insect control aviation.

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One crop protected by aerial
spraying and dusting is tobacco.

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The ultimately camouflaged the tobacco horn
worm can rapidly destroy a crop various

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insecticides can be used to
control this field. Peste.

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And insect infestation can readily crop.

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The productivity of this field current
has been destroyed by an outbreak of

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grasshoppers grasshopper outbreaks
going to occur in range land

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or a variety of field crops.

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This is insect damage to a
tobacco leaf in sat down

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and these can be controlled by the
aerial application of insecticides.

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Spray pests before damage
to a crop is done.

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Insecticides are poisons
growers of tobacco

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and food crops are required by law to
use them within the established residue

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tolerances. Field tobacco for example
is not sprayed with paraffin

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and within fifteen days of cutting
most insecticides kills warmbloods

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and cold bloods alike properly
used they will not cause disease

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nor increase the susceptibility
of disease in animal

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or man agricultural aviation is aware of
its growing responsibility in the field of

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toxicology.

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When the wheat land is
wet in the early spring

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and temperatures low ranchers may put nitrate
fertilizer on their fields the object

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is to produce an early crop majority.

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And consequently more grain volume
ranchers who regularly use agricultural

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aviation services often provide
a landing loading strip in.